must cockle
Regular verb: cockle - cockled- cockled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cockle
you must cockle
he must cockle
we must cockle
you must cockle
they must cockle 	I must be cockling
you must be cockling
he must be cockling
we must be cockling
you must be cockling
they must be cockling	I must have cockled
you must have cockled
he must have cockled
we must have cockled
you must have cockled
they must have cockled	I must have been cockling
you must have been cockling
he must have been cockling
we must have been cockling
you must have been cockling
they must have been cockling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't cockle
you mustn't cockle
he mustn't cockle
we mustn't cockle
you mustn't cockle
they mustn't cockle 	I mustn't be cockling
you mustn't be cockling
he mustn't be cockling
we mustn't be cockling
you mustn't be cockling
they mustn't be cockling	I mustn't have cockled
you mustn't have cockled
he mustn't have cockled
we mustn't have cockled
you mustn't have cockled
they mustn't have cockled	I mustn't have been cockling
you mustn't have been cockling
he mustn't have been cockling
we mustn't have been cockling
you mustn't have been cockling
they mustn't have been cockling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cockle?
must you cockle?
must he cockle?
must we cockle?
must you cockle?
must they cockle? 	must I be cockling?
must you be cockling?
must he be cockling?
must we be cockling?
must you be cockling?
must they be cockling? 	must I have cockled?
must you have cockled?
must he have cockled?
must we have cockled?
must you have cockled?
must they have cockled? 	must I have been cockling?
must you have been cockling?
must he have been cockling?
must we have been cockling?
must you have been cockling?
must they have been cockling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I cockle?
mustn't you cockle?
mustn't he cockle?
mustn't we cockle?
mustn't you cockle?
mustn't they cockle? 	mustn't I be cockling?
mustn't you be cockling?
mustn't he be cockling?
mustn't we be cockling?
mustn't you be cockling?
mustn't they be cockling? 	mustn't I have cockled?
mustn't you have cockled?
mustn't he have cockled?
mustn't we have cockled?
mustn't you have cockled?
mustn't they have cockled? 	mustn't I have been cockling?
mustn't you have been cockling?
mustn't he have been cockling?
mustn't we have been cockling?
mustn't you have been cockling?
mustn't they have been cockling?